SLC52A2 and cancer: After selecting tumors with the number of normal sample size ≥ 5, we confirmed the above findings with a significant upregulation of SLC52A2 expression in all cancers compared to normal tissues, including BLCA, BRCA, CHOL, COAD, ESCA, GBM, HNSC, KICH, KIRC, KIRP, LUAD, LIHC, LUSC, PRAD, READ, STAD, THCA, and UCEC (Fig. 1E).